Presumably she is in the competition?
Look at the colours of her dance outfit and for example intertwine a glittery ribbon with a french braid - more than one colour? all the better :green:
Section hair into lots of top knots wind around to make little buns and encapsulate with diamante nets - not got any? - make some:green:
Do a pleat at the back or maybe more to oneside or at an angle and use a long dimante slide to hold in place!
I'm sure you know little girls love sparkle so use your imagination and intertwine, pin up add to bands and section - all with sparkly stuff - then to top it off you could always add a light spraying of glitter hairspray :green:
Hope this helps a bit - ohhh how I wish I had a little girl :hug: